Beneath the surface of our gardens, parks, and forests, an unseen army works day and night, sculpting the very ground we walk ...

Understanding the differences between structural fill dirt and topsoil is crucial for anyone involved in construction and ...

The soil under our feet is teeming with mysterious life forms – possibly more than any other habitat on Earth.

Deep soils vital for life host an active new microbial phylum, CSP1-3. These microbes may be key to innovative water ...

as workers lay the first layers of soil on the overpass. The Wallis Annenberg Wildlife Crossing spans the 10-lane freeway in Agoura Hills and will become the largest such crossing in the world.

Nearly three years after the project began, the critical milestone was visible only to the government officials, scientists and longtime supporters who climbed to the top: soil. And not just any soil.